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Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    05/12/2024, 02:43

General

  • Target

    707c1fb31deb005df540fcfb7543cab27de3a170ff5a9174c177170b02d7fa4b.dll

  • Size

    45.1MB

  • MD5

    079e7f12cf3682838b344c095027b69b

  • SHA1

    6c827d4537ccdbc6099986c734dc9b266355d843

  • SHA256

    707c1fb31deb005df540fcfb7543cab27de3a170ff5a9174c177170b02d7fa4b

  • SHA512

    9b266b7416533babf2663cc06c0105ce2bde82c41d2b6705c1146fbe8ddad097965cbed80d10987dc0e3acf763dce29d0379ac9fb45c08b03dc9ea045e4c8bcd

  • SSDEEP

    786432:mUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRpY:mUP7GCG6iSrkx1hSzYsHQD3t/Re

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

pattreon.duckdns.org:7035

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-IHZUHP

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\707c1fb31deb005df540fcfb7543cab27de3a170ff5a9174c177170b02d7fa4b.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\707c1fb31deb005df540fcfb7543cab27de3a170ff5a9174c177170b02d7fa4b.dll
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:376
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\SysWOW64\regsvr32.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1668
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2968
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:2596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/376-1-0x00000000102E6000-0x0000000010300000-memory.dmp

    Filesize

    104KB

  • memory/376-0-0x0000000010000000-0x0000000012DD5000-memory.dmp

    Filesize

    45.8MB

  • memory/376-2-0x0000000010000000-0x0000000012DD5000-memory.dmp

    Filesize

    45.8MB

  • memory/376-10-0x0000000010000000-0x0000000012DD5000-memory.dmp

    Filesize

    45.8MB

  • memory/376-19-0x0000000012D6F000-0x0000000012D76000-memory.dmp

    Filesize

    28KB

  • memory/376-26-0x00000000102E6000-0x0000000010300000-memory.dmp

    Filesize

    104KB

  • memory/1668-3-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-12-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-14-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-8-0x0000000000160000-0x0000000000161000-memory.dmp

    Filesize

    4KB

  • memory/1668-7-0x0000000000160000-0x0000000000161000-memory.dmp

    Filesize

    4KB

  • memory/1668-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1668-11-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-15-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-16-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-17-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-18-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-20-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-21-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-22-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-23-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-24-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-25-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-27-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-28-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-29-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-30-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-31-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-32-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-33-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-34-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-35-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-36-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-37-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-38-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-39-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-40-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-41-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-42-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-43-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-44-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-45-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-46-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-47-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-48-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-49-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-50-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-51-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-52-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-53-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-54-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-55-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-56-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-57-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-58-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-59-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-60-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-61-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-62-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-63-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-64-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-65-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-66-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB

  • memory/1668-67-0x00000000000D0000-0x0000000000152000-memory.dmp

    Filesize

    520KB